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Polygon is a blockchain network that aims to provide an alternative to the Ethereum network, with a focus on providing faster and cheaper transactions. It uses a variation of the Proof of Stake consensus mechanism and is built on top of Ethereum, using its existing infrastructure and security. Polygon aims to be a multi-chain system, with a main chain that connects to various other side chains, allowing for increased scalability and faster transaction processing. But this is only a minimum of information. You can learn more if you visit this page about what is polygon. Here you will find all the information you need and can go deeper into the subject.
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